A Random Discrete Filling Method of Pbx Explosive Particles

A filling method and particle technology, which is applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of difficulty in getting started, tedious and time-consuming process, complicated operation, etc., and achieve the effect of high filling rate

Active Publication Date: 2019-09-10
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] However, since the commonly used PBX compression molding simulation software is driven by commands, the operation is complex and difficult to get started. It is necessary to manually input a large number of repetitive PBX explosive particle filling distributions, and the process is cumbersome and time-consuming.

Method used

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  • A Random Discrete Filling Method of Pbx Explosive Particles
  • A Random Discrete Filling Method of Pbx Explosive Particles
  • A Random Discrete Filling Method of Pbx Explosive Particles

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0030] Technical scheme of the present invention is as follows:

[0031] A PBX explosive particle particle random discrete filling method, comprising the following steps:

[0032] Step 1. Input the boundary conditions of the two-dimensional mesoscopic simulation system according to the simulation target, that is, the range that explosive particles can fill in the xy plane determined by the x-axis and y-axis, denoted as x∈[Xa,Xb], y∈[Yc ,Yd].

[0033] Step 2. Input the geometric data of explosive particles from large to small according to the proportion of different shapes of explosive particles in the actual explosive samples. Let the set of the maximum radius r of all explosive particles be R, denoted a...

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Abstract

The invention discloses a random discrete filling method for PBX explosive particles. The method is mainly used in a computer numerical simulation experiment under two-dimensional mesoscopic scale in an explosive particle pressing process. The method comprises the following mainly steps: firstly, inputting boundary conditions of a two-dimensional mesoscopic simulation system according to a real experiment process for pressing the PBX explosive particles; secondly, inputting different particle geometrical shape data according to an actual explosive sample; thirdly, sequentially and randomly generating various shapes of two-dimensional explosive particle geometrical data according to the sequence of the input explosive particle geometrical shape data, and generating a script file to store the generated two-dimensional circular explosive particle data into the script file; and fourthly, using a NairnMPM substance point method simulation software to calculate the script file, and carrying out a two-dimensional mesoscopic scale simulation experiment for pressing the PBX explosive particles. The method is relatively high in randomness, relatively large in filling density and relatively small in evacuated space, and is extremely approximate to a true technological process for pressing the PBX explosive particles.

Description

technical field [0001] The invention relates to the technical field of computer simulation of PBX explosives, in particular to a random discrete filling method of explosive particles, especially the simulation of PBX explosive pressing process on a two-dimensional mesoscopic scale, in which computer numerical simulation technology guides the formula design and production process of PBX It is widely used in fields such as mechanical property research. Background technique [0002] Energetic materials generally refer to explosives with high performance, and are widely used in the fields of national defense and national economy. It is a mixed explosive made of high-energy explosive crystal particles as the main filler, high molecular polymer or other additives as binder, and processed through a series of processes. Polymer Bonded Explosive (hereinafter referred to as PBX) is a typical composite material, and its properties are affected by various factors such as the internal c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/00
Inventor 唐红付先进卢国丽
Owner CHONGQING UNIV OF POSTS & TELECOMM
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